diff --git a/gtk/gtkimcontextwayland.c b/gtk/gtkimcontextwayland.c
index 393f9b91c6..2462f7201f 100644
--- a/gtk/gtkimcontextwayland.c
+++ b/gtk/gtkimcontextwayland.c
@@ -860,7 +860,7 @@ gtk_im_context_wayland_set_surrounding (GtkIMContext *context,
   context_wayland = GTK_IM_CONTEXT_WAYLAND (context);
 
   g_free (context_wayland->surrounding.text);
-  context_wayland->surrounding.text = g_strdup (text);
+  context_wayland->surrounding.text = g_strndup (text, len);
   context_wayland->surrounding.cursor_idx = cursor_index;
   /* Anchor is not exposed via the set_surrounding interface, emulating. */
   context_wayland->surrounding.anchor_idx = cursor_index;